[Wayland-bugs] [Bug 106713] Freezing on fullscreen when using Wayland and/or amdgpu module

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106713

            Bug ID: 106713
           Summary: Freezing on fullscreen when using Wayland and/or
                    amdgpu module
           Product: Wayland
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: XWayland
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: epigramx at yahoo.com
        QA Contact: xorg-team at lists.x.org

This is a relatively complex issue but I have pin-pointed it to a combination
of Wayland (not Xorg) and amdgpu module (not radeon) on R9 290 hardware.

I realize this could be related to the upstream of amdgpu too but it's most
likely a higher level issue than that.

The distro is current debian sid for months.

The issue was reliably reproducible when using Dolphin emulator on XWayland. At
fullscreen it would freeze the rendering; it would either stay frozen
indefinitely, or, even if it would unfreeze, it would only happen after exiting
fullscreen. The issue goes away with a) Xorg b) rarely with specific backends
only (e.g. Vulkan and not OpenGL).

The issue also goes away more easily c) when radeon module is used.

I realize the issue report isn't extremely descriptive in terms of debugging.
Let me know if there is an easy way to get some data right at the point of
those freezes. From my perspective there is no feedback by default; not from
dolphin at least.

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